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HomeMy WebLinkAboutInfiltration/Inflow Report May 1989Robert Book, President Max Moore, Vice President Myrneth Anderson, Secretary Robert Steinhart, Treasurer CLAY TOWNSHIP REGIONAL WASTE DISTRICT 10755 N. COLLEGE P.O. BOX 40638 INDIANAPOLIS, IN 46240 -0638 317 -844 -9200 Nay 9, 1939 Honorable Dottie Hancock, Mayor City of Carmel City Hall 40 East Main Street Carmel, IN 46032 Dear Mayor I-Iancockt' Infiltration /Inflow Richard Helmuth Jack L. Edwards John Schneider Marvin Pike, Manager The District has ,.been diligently monitoring flows for the past six months to locate and eliminate the sources of Infiltration and Inflow (I & I) into our sewer system. Prior to January,- 1989, ,there was a minimal I & I problem due to the drought which kept groundwater levels low and due to the fact there were few i'f> no °heavy;.rainfall. i wintensity events during 1988. During the month of April, 1989, two rainfall events occurred, April 3 and .4 (1.75 ") , and April. 29 : (2.00"), that thoroughly saturated the area— in January and February had replenished the groundwater table prior; to the rains. The result was significant. I & :I input to the sewer system as shown on the graphs attached. On these maximum rainfall days, the flows delivered to your - treatment ''plant were 2.6' mgd and 2.4 mgd respectively. Our Engineers have IMadepxtensivelloW measurements in the sewers and inspection of every manhole.- What we have learned is 1. Several construction sites for developments did not have all manholes plugged and rainfall runoff entered the sewer system. 2. Three manholes were found to have been flooded by runoff ponding over them, 3. One waterproof casting. had the bolts removed and surface water . was entering through the bolt holes. 4. Of the approximately 450 manholes in the sewer system, 150 were found to be leaking, 75 of these were significant leaks. Honorable Dottie Hancock, Mayor May 9, 1989 Page 2 5. Evidence of sump pumps being discharged into the sewer system was wide - spread with Northern Heights, College Meadows, Orchard Park and Jordan Woods being the major ones evidenced by flow monitoring to date. 6. Three sewer runs between manholes have shown increased flow indicating failure of the main pipe or house laterals. The following plan has been developed to attack the problem with the goal of eliminating as much I & I as possible: 1. Thompson Construction Company will continue to complete the repair of the 150 manholes with priority on the highest leaks. About 30 percent have already been repaired. 2. Waterproof castings will be added to the three manholes which . evidenced flooding. Bolts have already been replaced on the one. 3. Meetings will be held with the Home Owners Association of the four subdivisions followed by distribution of literature concerning the need to eliminate sump pumps connected to the system. This will be followed by inspections by the-District personnel of homes identified to have sump pumps to determine whether their discharge is to a point other than the sewer. 4. Flow monitoring will continue on other subdivisions to evaluate the degree of extraneous flows entering the system and determine what additional areas will be added for sump pump investigation. Also, to evaluate the possible existence of main line sewer leaks within subsystems. 5. All development construction sites will be checked before each rain to insure sewer plugs are in place and precautions against introduction of runoff or infiltration stored in uncompleted sewers are not pumped to the District's sewer. 6. The three sewer runs will be televised to determine sources and corrections made. We expect that the action to be taken on the waterproof castings and sealing of manholes should insure the District's ability to keep the flows to your treatment plant below our agreed limit. The work to eliminate sump pump sources and flow screening of the sewer system for other potential leaks in the main line pipe and house lateral connections will require additional time to implement. Honorable Dottie Hancock, Mayor May 9, 1989 Page 3 Be assured that the District is addressing this problem and will do everything it can to keep flows below our agreed limits. We will keep you advised periodically of our progress. Very truly yours, CLAY TOWNSHIP REGIONAL WASTE DISTRICT Max Moore Vice President cc: Robert F. Campbell Samuel L. Moore PRIMARY AREA FLOWS APRIL 1989 1 - 0.8 0.6 - 0,4 -0,'" 0 / / / :s. • / 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1718 19 20 21 22 23 24 25 26 27 28 29 30 1 2- 3 4 5 ../1 FLOW (MGLI) ;;;S:1 RAINFALL (IN) 2.4 PRIMARY AREA FLOWS STORM FLOW COMPARISON 2' RAIN ■ 1.76' RAIN PROJECTED FLOW. /2.008 0.22 Q.327 1 ❑ APRIL 4 STORM 1 \ 1.623 0.158 f _' X98 y1.288 3 4 5 6 7 + APRIL 29 STORM CTRND LIFT 87ITION FL083: PRINIRY *RBI 1988 1989 SIPTINBIR OCTOBER NOVIEB111 DECEIBER 1118011 5IB801117 BIRCH APRIL Del FLOV RAINFALL DATE FLOV RIIIFILL MI FLOV RAINFALL DATE FLOV RAINFALL DATE 5108 RAINFALL DATE PLOY RAINFALL DAM FLO! RAINFALL Dal FLO! RAINFALL 1 0.426 1 0.414 0.3? 1 0.455 7 0.519 1 0.759 7 0.621 1 0.820 1 0.904 • 1 0.420 0.05 2 0.492 2 0.464 2 0.520 2 0.648 2 0.601 2 0.793 2 0.922 0.10 3 0.401 1.43 3 0.527 3 0.448 3 0.480 3 0.704 3 0.621 0.10 3 0.612 3 1.205 0.75 4 0.484 0.66 4 0.471 4 0.440 4 0.541 4 0.591 4 0.579 4 0.569 0.40 4 2.180 1.75 5 0.426 5 0.148 5 0.520 1.75 5 0.591 5 0.582 5 0.674 0.50 5 0.709 0.60 5 1.908 0.10 6 0.411 6 0.148 6 0.568 1.50 6 0.501 1 0.678 6 0.715 1 0.840 2.5 8808 6 1.483 Trace 1 0.443 1 0.441 1 0.614 7 0.616 7 0.775 1 0.635 7 0.808 r 1.276 0.20 8 0.445 8 0.130 8 0.518 8 0.513 8 1.068 0.50 8 0.633 8 0.728 8 1.126 0.10 9 0.416 9 0.466 9 0.513 9 0.510 1 1.084 9 0.643 9 0.511 9 1.231 10 0.392 10 0.530 10 0.531 10 0.169 10 0.945 10 0.632 10 0.192 Thaegrc. 10 1.209 11 0.468 1.00 11 0.471 11 0.566 11 0.535 11 0.788 11 0.556 11 0.956 ' 11 1.055 12 0.501 0.11 11 0.441 12 0.522 12 0.513 12 0.745 12 0.621 12 1.11? • 12 0.911 13 0.478 0.03 13 0.135 13 0.574 0.25 13 0.581 13 0.768 13 0.675 0.20 13 1.117 13 0.933 0.10 14 0.410 14 0.433 14 0.611 14 0.489 11 0.689 14 0.591 Trace 14 0.965 14 0.889 15 0.431 15 0.122 15 0.558 15 0.501 15 0.761 0.20 15 0.576 15 0.116 Trace 15 0.828 0.20 16 0.137 0.15 16 0.473 0.10 16 0.511 0.20 16 0.491 16 0.871 16 0.593 0.20 16 0.835 16 0.865 11 0.402 17 0.526 1.00 11 0.521 17 0.461 17 0.698 17 0.505 17 0.193 11 0.895 18 0.415 18 0.505 18 0.523 18 0.526 18 0.665 18 0.551 18 0.732 Trace 18 0.811 0.30 19 0.520 0.72 19 0.515 0.40 19 0.461 19 0.548 19 0.148 19 0.641 19 0.824 19 0.873 0.75 20 0.471 0.15 20 0.466 20 0.608 20 0.510 20 0.656 20 0.661 20 0.816 0.97 20 0.815 21 0.459 21 0.136 21 0.833 1.50 21 _0.191 21 0.591 21 0.840 0.50 21 1.04? 21 0.845 22 0.116 0.59 22 0.128 22 0.678 22 0.496 22 0.661 22 0.843 22 1.012 22 0.179 23 0.480 23 0.189 23 0.641 23 0.519 0.10 13 0.706 23 0.844 23 0.931 23 0.822 24 0.150 0.04 24 0.566 24 0.589 14 0.553 24 0.641 24 0.850 24 0.868 24 0.866 25 0.506 25 0.475 25 0.604 25 0.510 0.20 25 0.505 0.10 25 0.790 25 0.838 25 0.115 26 0.544 26 0.451 26 0.563 26 0.511 26 0.602 0.60 26 0.889 0.20 26 0.863 21 0.135 21 0.466 27 0.442 11 0.585 0.30 21 0.589 0.40 2? 0.758 0.20 27 0.931 21 0.833 21 0.139 0.15 28 0.455 28 0.453 28 0.646 28 0.692 e 811011 28 0.623 28 0.831 28 0.778 0.10 28 0.165 0.50 29 0.151 29 0.138 29 0.559 29 0.730 29 0.690 19 0.769 0.20 29 1.159 2.00 30 0.454 30 0.499 30 0.520 30 0.610 30 0.133 30 0.846 0.15 30 2.349 0.50 31 0.550 31 0.651 31 0.642 31 0.981 0.10 1 1.681 0.20 2 1.325 3 1.163 4 1.048 5 1.082 0.70 FLOW ( MGDV RAINFALL 1.9 1.8 1.7 1.6 1.5 1,4 1.3 1.2 1.1 1 0.9 0.8 0.7 0,6 0.5 0,4 0.3 0,2 0.1 0 • MERIDIAN CORRIDOR FLOWS APRIL 1989 .X, N.< "." v X ti 0. X T7, 1 X ..1 . 111 111 a 211 _ 1 „ 11111111111111111111M1111111 11111111111 1 •.? X ix 11 1 /X 1111111111 2 3 4 5 6 7 8 9 10 11 12131415161718 19 20 21 22 23 24 25 26 27 28 29 30 1 2 3 4 5 FLOW (MGO) PAINFALL (IN) C?RPD LIFT STATION FLOPS : 98810108 CORRIDOR 1988 1989 96PTBNBIR OCTOBER NOY89861 DBCBIBBR J01UART FBBRU /8T 1IRC8 APRIL DATB FLOP RAINFALL DAT1 PL08 RAINFALL DATB PION RAINFALL DATB FLOP RAIIFALL DATB PLOP RAINFALL DATB PL08 RAINFALL DAT1 FLOP RAINFALL DATB PLOP RAINFALL 1 0.222 1 0.173 0.37 1 0.143 2 0.237 0.05 2 0.144 2 0.147 3 0.222 1.43 3 0.124 3 0.151 4 0.110 0.66 4 0.172 4 0.155 5 0.168 5 0.165 5 0.169 1.75 6 0.139 6 0.161 6 0.113 1.50 7 0.192 7 0.163 7 0.094 8 0.196 0 0.156 8 0.147 9 0.191 9 0.115 9 0.142 10 0.186 10 0.114 10 0.150 11 0.137 1.00 11 0.170 11 0.160 12 0.152 0.11 12 0.156 12 0.128 13 0.213 0.03 13 0.156 13 0.108 0.25 14 0.195 14 0.158 14 0.100 15 0.196 15 0.137 15 0.143 16 0.194 0.IS 16 0.111 0.70 16 0.158 0.20 17 0.194 17 0.143 1.00 17 0.155 18 0.131 18 0.228 18 0.131 19 0.146 0.12 19 0.209 0.40 19 0.150 20 0.210 0.15 20 0.198 20 0.105 21 0.194 21 0.195 21 0.101 1.50 22 0.205 0.59 22 0.161 22 0.152 23 0.195 23 0.106 23 0.139 24 0.176 0.04 24 0.108 24 0.140 15 0.122 25 0.163 20 0.073 26 0.119 26 0.160. 26 0.102 27 0.178 27 0.168 27 0.107 0.30 28 0.185 28 0.139 28 0.096 29 0.180 29 0.140 29 0.148 30 0.187 30 0.091 30 0.136 31 0.094 0.141 1 0.080 1 0.145 1 0.142 1 0.13E -0.141 2 0.073 2 0.147 2 0.162 2 0.102 0.10 0.135 3 0.082 3 0.143 0.10 3 0.151 3 0.127 0.75 0.092 4 0.135 4 0.134 4 0.143 0.40 4 0.238 1.75 0.094 5 0.135 5 0.089 0.50 5 0.107 0.60 5 0.195 0.10 0.14I 6 0.154 6 0.082 6 0.101 2.5' 9808 6 0.216 Trace 0.141 7 0.151 7 0.147 7 0.131 7 0.302 0.20 0.136 8 0.126 0.50 8 0.145 8 0.152 8 0.211 0.10 0.130 9 0.105 9 0.145 9 0.159 9 0.161 0 0.129 10 0.156 10 0.148 10 0.167 1Eav /Trc. 10 0.137 1 0.081 11 0.153 11 0.136 11 0.183 11 0.171 2 0.080 12 0.161 12 0.094 12 0.121 12 0.169 3 0.152 13 0.153 13 0.089 0.20 13 0.101 13 0.167 0.10 4 0.142 14 0.147 14 0.153 TRACI 14 0.170 14 0.159 5 . 0.145 15 0.114 0.20 15 0.157 15 0.119 trace 15 0,155 0.20 6 . 0.133 16 0.087 16 0.148 0.20 16 0.165 16 0.121 7 0.129 17 0.158 11 0.150 17 0.162 17 0.105 8 0.085 18 0.153 18 0.142 18 0.158 Trace 18 0.162 0.30 9 0.074 19 0.181 19 0.095 19 0.122 19 0.19I 0.75 0 0.127 20 0.132 20 0.087 20 0.113 0.97 20 0.168 1 - 0.119 21 0.140 21 0.136 0.50 21 0.196 21 0.163 2 0.120 22 0.093 22 0.158 22 0.178 22 0.161 3 0.114 0.10 23 0.085 23 0.160 23 0.184 23 0.118 4 0.094 24 0.141 24 0.147 24 0.170 24 0.102 5 0.059 0.20 25 0.146 0.10 25 0.134 25 0.136 25 0.191 6 0.054 26 0.152 0.60 26 0.101 0.20 26 0.099 26 0.169 7 0.064 0.40 27 0.158 0.20 27 0.090 27 0.111 27 0.184 0.15 8 0.137 6' 8809 28 0.146 28 0.149 28 0.192 0.10 28 0.181 0.50 9 0.114 29 0.111 29 0.113 0.20 29 0.245 2.00 0 0.115 30 0.096 30 0.183 0.75 30 0.266 0.50 1 0.108 31 0.146 31 0.175 0.10 1 0.179 0.20 2 0.238 3 0.210 4 0.186 5 0.213 0.70 *** a********a*********** a* s* a** a* s*a*** ss***********s******************a**a**** a* * * * * * * * * *a * * *a* * ***a * * * * * * * ** * CLAY TOWNSHIP REGIONAL WASTE DISTRICT * * * * MANHOLE NUMBER: OP24 * ** tax************************ a*************************************** a*** s***** * * * * * * *a * * * *a *a * * * * * * * * * * * * * * ** * DATE : RAINFALL : AVE. GPM : TOTAL 1 : DATE 1 RAINFALL : AVE. GPM ' TOTAL *'*CHANGE IN*:* * : : : GALLONS : : 1 : : GALLONS * :*FLOW GAL. * :* ****aass***a******************************************************** a***** a**** * * * * * * * * * * * * *** * * * * * * * * ** * * * * ** .75 : 44 69005 : : 4/28/89 62842 : : 4/29/89 71424 : : 4/30/89 : 80165 : : 5/01/89 : 65462 : : 5/02/89 : 63677 : : 5/03/89 : 4/20/89 4/21/89 4/22/89 4/23/89 4/24/89 4/25/89 4/26/89 : 0 , 48 69725 ' 4/27/89 ' 0.75 0 : 48 0.50 : 0 : 44 2.00 : 0 1 50 0.50 : 0 : 56 0.20 : 0 1 45 0 1 0 : 44 0 1 1 : : : 5/04/89 : 0 1 59 ******** a** a*** a* * *a * * * * * * *as * * ** * *a * * * * * * *a *a ** sass*a********************* a*** * * * * * * * * * * * * * ****as*** * * * * * * * ** ******** a* sa********* aa******************************* a******* a*** * * * * * *as * * * * * * * * * * * * * * * * * * * * * ** *tat* * * * * * * *a * CLAY TOWNSHIP REGIONAL WASTE DISTRICT * 43 64 120 83 68 62 63331 *1* 62338 *1* 92261 *1* 172613 *1* 119534 * :* 97762 *1* 89582 *1* 85622 *1* — 6394 * :* — 6667 s:* 29419 * :* 101189 * :* 39370 * :* 32299 * :* 25906 *1* *1* * * * MANHOLE NUMBER: CM1 * * **a ri a***** a******** a***a* a* asaa** a*** a** a*aa**** s*********aa*** * * * * * * * * * *a * *a *a * *a * * * * ** ***a** *sass * **a * * * ** * DATE : RAINFALL : AVE. GPM : TOTAL 1 : DATE : RAINFALL : AVE. GPM : TOTAL *: *INCREASE *'* ' ' : GALLONS ; : : 1 1 GALLONS *:*FROM RAIN * :* * * * * * * * * *a **t* **a*** * * ** ** ass* a* s******************** a* a******** * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** *sass********** 1 4/22/89 1 0 15 1. 21355 : : 4/29/89 1 2.00 1 24 1 35136 * :s 13781 a :s 1 4/23/89 1 0 1. 17 : 24883 1 1 4/30/89 1 0.50 1 42 1 61085 *pi 36202 * 1* : 4/24/89 1 0 1 21 1 29808 1 : 5/01/89 1 0.20 1 28 : 40954 *1* 11146 a :* 1 4/25/89 : 0 1 15 1 21816 1 : 5/02/89 : 0 : 23 1 33696 s1* 11880 * 1* 4/26/89 1 13 : 18533 : 1 5/03/89 : 0 : 20 : 28598 *1* 10066 *1* 1 0 , 4/27/89 : 0.75 1 14 1 20117 1 : 5/04/89 1 0 1 17 1 23990 *1* * 1a 4/28/89 0.50 16 22421 : : 1 1 : a :a *1* : : 1 : : *1* *1* a**********************s*********** a** a**** s***************************** a***** * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** ***********************a****************************************** * * * * * * * * * * * * * * * * * * * * * * * * * *a * * ** * , , * * COLLEGE MEADOWS : 1 ORCHARD PARK * * I , * ********* s* a*************************** a***a a** a* s******* a******** * * * * * * * * * * * * * * * * * * * * * * * * * *****a * DATE 1 RAINFALL 1 AVE. GPM 1 TOTAL : 1 DATE 1 RAINFALL : AVE. GPM : TOTAL * * 1 1 : GALLONS ' ' : 1 1 GALLONS * **a**********a* a**** a** a****s**** s******* s***** s*s a*************** * * * * * * * * * *a****** * * * * * * * * * * * * ** 1 4/22/89 0 1 15 : 21355 : : 4/22/89 1 0 : 29 1 41486 1 1 4/23/89 1 0 17 , 24883 : 1.4/23/89 : 0 : 32 1 46541 1 1 4/24/89 : 0 : 21 1 29808 : : 4/24/89 : 0 1 7 5035 1 35 : 4/25/89 : 0 1 15 1' 21816 1 1 4/25/89 1 0 1 30 1 143646 : 1 4/26/89 1 0 : 13 1 18533 :: 4/26/89 1 0 1 31 1 45144 1 1 4/27/89 1 0.75 1 14 4 20117 : 1 4/27/89 : 0.75 1 30 1 43214 1 1 4/28/89 1 0.50 1 16 ;1 22421 : 1 4/28/89 : 0.50 1 28 1 39917 : : 4/29/89 : 2.00 1 24 1 35136 : 1 4/29/89 : 2.00 1 40 1 57125 1 : 4/30/89 : 0.50 1 42 11 61085 : : 4/30/89 1 0.50 1 77 1 111528 : : 5/01/89 : 0.20 1 28 11 40954 : 1 5/01/89 : 0.20 : 55 : 178581 1 : 5/02/89 : 0 : 23 1 33696 1 1 5/02/89 1 0 1 44 1 64066 1 : 5/03/89 : 0 : 20 1. 28598 1 1 5/03/89. : 0 1 42 : 60984 : : 5/04/89 1 0 : 17 1 23990 1 1 5/04/89 : 0 : 43 : 61632 1 ********************************* * * * * * * * * * * * * * * * * * * * * * * * * * ****** ** **** * * ******* ** * * * * * * * * * * * * ** ** SATURDAY SUNDAY MONDAY TUESDAY WEDNESDAY THURSDAY FRIDAY SATURDAY - SUNDAY MONDAY TUESDAY WEDNESDAY THURSDAY THU. FRI. SAT. SUN. MON. TUE. WED. THU. SAT. SUN. MON. TUE. WED. THU. FRI. 4/22 4/23 4/24 4/25 4/26 4/27 4/28 4/29 4/30 5/1 5/2 5/3 5/4 Zf oV 0 0 t 120 CLAY TOWNSHIP REGIONAL WASTE DISTRICT FLOW MONITORING REPORT 80 - 70- 60- 50 - m" RAINFALL uwmawnwuw IIMII emuIewi = 30- S ti M S 10 - = 1 r 1 r T 4/22 4/23 4/24 4/25 4/26 4/27 4/28 4/29 4/30 5/1 5/2 . 5/3 5/4 --1.2 <s .1.0 ¢v "- O8 - 0.8 - 0.4 0.2 T 1 1 0 COLLEGE MEADOWS FLOW DATE + ORCHARD PART( FLOW T E 0 -1 47 J 0 E 65 CLAY TOWNSHIP HIP REGIONAL WASTE DISTRICT COLLEGE MEADOWS FLOW MONITOR REPORT 60 - 40 - rf l/ 35 30 -- N\s„,_ 15 SATURDAY SUNDAY MONDAY TUESDAY WEDNESDAY THURSDAY DATE ❑ 4/22/89 - 4/28/89 + 4/29/89 - 5/4/89 FRIDAY 120 CLAY TOWNSHIP REGIONAL WASTE DISTRICT ORCHARD PARK FLOW MONITOR REPORT 110 — 100 — 90— 80 — 70— 60— �r_r 40 -- 30 SATURDAY SUNDAY MONDAY TUESDAY WEDNESDAY THURSDAY FRIDAY DAY ❑ 4/22/89. — 4/28/89 + 4/29/89 — 5/4/89